Resideo HPSR104 Switching Relay Els PW 29614 and the critical relief valve

and the critical relief valve seat O-ring

12-inch diameter

Designed to operate under full system pressure with a maximum operating pressure of 690 psig

Flexible Power Compatibility: Supports dual-voltage inputs (24V AC/DC or 120V AC) for seamless integration with existing fire alarm and BAS systems

HVACR technicians can significantly reduce downtime and operational costs

Resideo HPSR104 Switching Relay Els PW 29614 and the critical relief valveThe Resideo HPSR104 is a robust four zone switching relay designed for professional hydronic applications. This 120V pump zoning panel provides precise control for up to four circulator pumps, integrating a dedicated priority zone for domestic hot water (DHW) calls. Engineered for versatility, it is fully compatible with most thermostats, including power stealing, electromechanical, and modern smart thermostats like the T6 Pro. Each thermostat